The phrase "although immaterial" is correct and usable in written English.
It can be used to introduce a contrasting idea or to indicate that something is not significant or relevant to the main point being discussed.
Example: "The evidence presented was compelling; however, it was deemed irrelevant, although immaterial to the case."
Alternatives: "though insignificant" or "even if unimportant".
Although perhaps immaterial for Rio in an accounting sense, we note it is substantial from our perspective, in the order of $100m," Jordan said.
We are aware, too, that a prevailing opinion in England makes motives immaterial, although it is probable that in Allen v. Flood 1898, A. C. 1, 94, 67 L. J. Q.
Exactly what kind of paradise that might be is immaterial, although it is an interesting topic of speculation.
Study outcomes were simulated from model (1) using means of zero, although this choice is immaterial.
Although seemingly abstract and "immaterial" as a category of emotive states, feelings of sublimity have been found to evoke distinctive psychophysiological responses relative to feelings of happiness, sadness, or tension (Baltes et al. 2011).
The Haussmannian idea of a city, although adapted to a flexible, immaterial and fluid economy (Sassen 2014), has been emphasised at the point that, currently, cities are recognised as the fundamental, if not the only, economic machine capable of assuring the reproduction of capital.
Suntech also said that its results for 2011 and the first quarter of 2012 should not be relied on, although the impact was expected to be immaterial.
Although he insists that God is an immaterial spirit, he supposes this claim to be compatible with a certain "limited embodiment".
To be more accurate, the soul was the principle of life in something material; it needed the material element to exist, although it was not itself either material or immaterial but, to put it crudely, an abstraction.
Although Judge Klausner would probably rule the point immaterial, it might be added that "Stairway to Heaven" is a variegated tour-de-force of a song while "Taurus" is hazily inert.
